如何在NodeJs项目中添加构建脚本和测试

Question

我已经创建了一个基本的todo应用程序，它的package.json文件如下：

{
  "name": "to-do-app",
  "version": "1.0.0",
  "description": "A basic to-do app created using JavaScript.",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Sahil Silare",
  "license": "MIT",
  "dependencies": {
    "body-parser": "^1.19.0",
    "build": "^0.1.4",
    "ejs": "^2.7.1",
    "express": "^4.17.1",
    "npm-build": "0.0.1"
  },
  "devDependencies": {},
  "repository": {
    "type": "git",
    "url": "git+https://github.com/sahil9001/to-do-app.git"
  },
  "keywords": [
    "todo",
    "app"
  ],
  "bugs": {
    "url": "https://github.com/sahil9001/to-do-app/issues"
  },
  "homepage": "https://github.com/sahil9001/to-do-app#readme"
}

每当我运行npm test时，它会因为没有指定测试而失败，我该如何解决这个问题？此外，每当我尝试使用TRAVIS CI时，它无法检测到build脚本，我如何创建一个？

Answer 1

在package.json的脚本属性中指定所有必需的脚本，如下所示

{
      "name": "to-do-app",
      "version": "1.0.0",
      "description": "A basic to-do app created using JavaScript.",
      "main": "index.js",
      "scripts": {
        "test": "put test command here",  // example "test": "mocha test.js"
         "build" : "put build command here"
      },
      "author": "Sahil Silare",
      "license": "MIT",
      "dependencies": {
        "body-parser": "^1.19.0",
        "build": "^0.1.4",
        "ejs": "^2.7.1",
        "express": "^4.17.1",
        "npm-build": "0.0.1"
      },
      "devDependencies": {},
      "repository": {
        "type": "git",
        "url": "git+https://github.com/sahil9001/to-do-app.git"
      },
      "keywords": [
        "todo",
        "app"
      ],
      "bugs": {
        "url": "https://github.com/sahil9001/to-do-app/issues"
      },
      "homepage": "https://github.com/sahil9001/to-do-app#readme"
    }

在脚本属性中没有列出任何脚本命令，只有默认值。您必须根据需要创建并放置它。有关更多详细信息，请参阅以下链接

https://www.freecodecamp.org/news/introduction-to-npm-scripts-1dbb2ae01633/

https://flaviocopes.com/package-json/

Answer 2

如果你在“脚本”下查看，你会看到你的npm脚本，比如你在运行"npm test“时调用的脚本。

  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },

当你运行NPM init时，默认值是这个简单的回显，告诉你没有测试，你必须在这里写你自己的测试命令。

Travis未能检测到构建脚本，因为您的脚本部分中没有" build“的值，请添加如下内容：

  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "my_script_to_build"
  },